Video: Cov ntaub ntawv dab tsi yog khaws cia hauv barcode?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov barcode muaj cov ntaub ntawv hais txog hom khoom, qhov loj me, chaw tsim khoom thiab lub teb chaws ntawm lub hauv paus chiv keeb. Nws kuj muaj cov lej kos, kom lub khoos phis tawj tuaj yeem lees paub tias cov ntaub ntawv tau nyeem kom raug. Cov barcode tsis muaj nqi. Tus nqi yog tuav nyob rau hauv lub database hloov.
Hauv qhov no, barcodes ua haujlwm li cas cov ntaub ntawv khaws cia rau lawv?
A barcode qhov tseem ceeb yog ib txoj hauv kev rau encode cov ntaub ntawv nyob rau hauv ib tug visualpattern uas lub tshuab yuav nyeem tau. A barcode scanner nyeem cov qauv ntawm cov xim dub thiab dawb uas yog tom qab ntawd tig mus rau hauv kab ntawm cov ntawv koj lub computer tuaj yeem nkag siab.
Kuj Paub, ntau npaum li cas cov ntaub ntawv tuaj yeem khaws cia hauv barcode? 1) Tus nqi ntawm cov ntaub ntawv: Txij li 2D barcode tau tuav cov ntaub ntawv vertically thiab horizontally, nws muaj peev xwm tuav tau ntau ntau cov ntaub ntawv - 4000 cim lossis ntau dua! Raws li 1D barcode tsuas tuav cov ntaub ntawv kab rov tav, nws tsuas yog txwv rau ob peb tus lej alpha-tus lej xwb.
Hauv qhov no, cov ntaub ntawv dab tsi khaws cia hauv QR Code?
Hu rau cov ntaub ntawv : Ib scanned QR code ua haujlwm zoo li daim npav lag luam virtual, suav nrog koj lub npe, tus lej xov tooj, email, chaw nyob thiab tuam txhab cov ntsiab lus. Cov no yeej khaws cia nyob rau hauv ib lub xov tooj hu thaum scanned.
Yam khoom barcode yog dab tsi?
Universal Khoom Code. UPC (tshwj xeeb hais txog UPC-A) muaj 12 tus lej uas tau muab tshwj xeeb rau txhua yam khoom lag luam. Nrog rau EAN cuam tshuam barcode , UPC yog lub barcode Feem ntau yog siv rau kev luam ntawm cov khoom lag luam ntawm qhov muag, ib qho GS1 specifications.
Pom zoo:
Dab tsi yog cov ntaub ntawv hloov pauv hauv cov ntaub ntawv khaws cia?
Cov ntaub ntawv hloov pauv yog cov ntaub ntawv uas tau tsim nyob rau hauv daim ntawv thov kev sib ntsib, uas tsis tau khaws cia hauv cov ntaub ntawv tom qab daim ntawv thov raug txiav
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Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
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Kev khaws cia thiab khaws cov ntaub ntawv yog dab tsi?
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Cov ntaub ntawv khaws cia dab tsi tuav cov ntaub ntawv tshaj plaws?
Cov ntaub ntawv khaws cia rau hauv lub hard disk tuaj yeem nkag tau sai dua li cov ntaub ntawv khaws cia rau ntawm lub disk. Hard disks tuaj yeem khaws ntau cov ntaub ntawv ntau dua li lub floppy disk. Ib qho nyuaj hard disk hauv tus kheej lub computer tuaj yeem tuav ob peb gigabytes ntawm cov ntaub ntawv